clean-css is used by jingo-minify, which executes it as a subprocess. The CLI arguments have not changed between 0.x and 2.0.x, so this should be safe. We should notice a distinct size win in our asset bundles.
uglify-js is the same: the arguments have not changed and the latest version(s) offer bug fixes, efficiency improvements, and minor size wins.

- Commonplace requires node 0.10.x or higher to run (sorry Ubuntu), as do some of our existing dependencies.
- Add commonplace as a dependency for folks that don't work on front-end code.
- Bump our version because 0.0.1 is a sad sally.